Advertisements
Advertisements
प्रश्न
Fill in the blank in the following sentences:
Acids produce.......................... ions on dissolving in water.
उत्तर
Acids produce hydronium ions on dissolving in water.
APPEARS IN
संबंधित प्रश्न
While diluting an acid, why is it recommended that the acid should be added to water and not water to the acid?
Compounds such as alcohols and glucose also contain hydrogen but are not categorized as acids. Describe an activity to prove it.
Why does distilled water not conduct electricity, whereas rain water does?
What colour do the following indicators turn when added to a base or alkali (such as sodium hydroxide)?
red cabbage extract
What colours do the following indicators turn when added to an acid (such as hydrochloric acid)?
methyl orange
What happens when dilute hydrochloric acid is added to sodium carbonate? Write a balanced chemical equation of the reaction involved.
What happens when carbon dioxide gas is passed through lime water for a short time?
Write equations of the reactions involved.
10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount of HCl solution (the same solution as before) required to neutralise it will be:
(a) 4 mL
(b) 8 mL
(c) 12 mL
(d) 16 mL
You have been provided with three test-bubes. One of these test-tubes contains distilled water and the other two contain an acidic and a basic solution respectively. If you are given only blue litmus paper, how will you identify the contents of each test-tube?
In the experimental set-up to show that "the germinating seeds give out carbon dioxide", answer the following questions:
(i) Why do we keep the conical flask airtight?
(ii) Name the substance kept in the small test tube inside the conical flask. Write its role.
(iii) Why does water rise in the delivery tube?
